The kwiff sign up offer bonus is one of the more straightforward welcome deals for new UK sports bettors. The headline is simple: Bet £10 Get £40 in free bets. You don't need a promo code, so there's nothing to copy, paste or forget at the deposit stage. kwiff is a UK-based bookmaker best known for randomly "supercharging" odds on bets. This guide covers how to claim the offer, which terms matter, and what else kwiff has for sports and casino players.
Kwiff Bonus Programme Overview
kwiff keeps its bonus line-up fairly tight, which makes it easy to follow. There are three main parts: a sports welcome offer for new customers, a separate casino welcome bonus for slot players, and recurring promotions such as the Kennel Club greyhound racing offer.
The centrepiece is the kwiff sign up offer bonus for sports: Bet £10 Get £40 in free bets. That is four times your qualifying stake back in free bets, and the bar to entry is low. You deposit and bet £10, the bet needs to be at evens or bigger, and that's it.
The casino side runs on its own track. Wager £20 cash on slots within 5 days of your first deposit and you get 200 Free Spins on Book of Dead. If greyhounds are more your thing, the Kennel Club promotion gives you a £10 Greyhound Racing Free Bet for placing three qualifying bets of at least £10 each on greyhound racing in a single day at minimum odds of 1.75. It runs Monday to Thursday until 31 December 2026.
This guide focuses on the sports welcome offer. The casino and greyhound deals get a short summary further down, so you can see how they fit alongside it.
One thing sets kwiff apart from most UK bookmakers. It randomly "supercharges" the odds on bets, so a selection you've already placed can be boosted to a bigger price. You don't opt in and there's no code. It simply adds value on top of the standard bonuses and makes routine bets a bit more exciting.
The Main Kwiff Sign Up Offer
The main sports deal is Bet £10 Get £40 in free bets, and it's for new customers only. The minimum deposit is £10, and your qualifying bet is also £10. The maximum bonus is £40.
Your qualifying bet must go on any single sports market at minimum odds of 1/1 (2.00). A "single" just means one selection on its own, not part of an accumulator. Back a football result at evens or bigger and you're covered.
Once the qualifying bet settles, the £40 in free bets lands in your account. Win or lose, the bet only has to settle. The free bets can't be withdrawn as cash, and they expire in seven days, so plan to use them soon.
Best of all, there's no promo code needed. Sign up, deposit, bet, and the offer does the rest.
How to Claim Your Kwiff Welcome Bonus
Claiming the offer takes a few minutes. You must be 18 or older and physically located in the UK. For a closer look at each screen, see our guide to kwiff sign up offer registration.
- Go to the kwiff website at kwiff.com.
- Tap the "Join" or "Sign Up" button.
- Register with your phone number, which sends you a 4-digit verification code, or with your email, which sends you a verification link.
- Enter your personal details: name, date of birth, home address, email and phone number.
- Verify your email by clicking the link sent to your inbox.
- Make a first deposit of at least £10 using Visa or Mastercard.
- Place a qualifying bet of £10 on any single sports market at odds of 1/1 (2.00) or higher.
- Once the bet settles, £40 in free bets is credited to your account.
You won't need a promo code at any stage.
Key Terms and Wagering Requirements
The terms are light compared with many welcome offers. A "qualifying bet" is simply the first bet that unlocks the bonus. Here's what you need to know:
The full T&Cs are on the kwiff site. Give them a quick read before you place your first bet.
Other Kwiff Bonuses and Promotions
The sports welcome offer is the main draw, but kwiff has a few other deals worth knowing about. We cover the casino and other offers in separate, more detailed guides. Here's a quick overview.
For slot fans, the casino welcome bonus works differently from the sports offer. You wager £20 cash on slots within 5 days of your first deposit, and kwiff gives you 200 Free Spins on Book of Dead. Each spin is worth £0.10, and there's a £250 total maximum withdrawal on winnings from those spins. Deposits made with e-wallets and virtual cards are excluded, so use the right payment method if you want this one.
Greyhound bettors get the Kennel Club promotion. Place three qualifying bets of at least £10 each on greyhound racing in a single day, at minimum odds of 1.75, and you earn a £10 Greyhound Racing Free Bet. It runs Monday to Thursday until 31 December 2026, so regular dog racing punters can collect it again and again.
Then there's the feature kwiff is best known for: random "supercharged" odds. Any bet you place can be boosted to bigger odds without warning. You don't need to claim anything or enter a code. It just happens, and it can turn a modest win into a much better one.
If you'd rather manage your bets and spins on your phone, our guide to the kwiff sign up offer app explains how to get started on mobile.
Casino Welcome Bonus
The casino welcome bonus is aimed at slot players and sits apart from the sports offer. Wager £20 cash on slots within 5 days of your first deposit, and you'll receive 200 Free Spins on Book of Dead.
Each spin is valued at £0.10. The total maximum withdrawal from your free spin winnings is £250, so expect a cap even after a good run. E-wallets and virtual cards are excluded from this offer, so check your deposit method before you start.
Book of Dead is a popular Play'n GO slot with an RTP of 96.21%. RTP, or "return to player", is the long-term average a game pays back. It can also pay up to 5,000x your stake, which gives those spins real upside. Our full casino guide covers the details.
Kennel Club Greyhound Offer
The Kennel Club promotion is a recurring offer for existing customers. It isn't part of the sign-up bonus, so you can use it alongside your welcome free bets once your account is up and running.
It works like this. Place three qualifying bets of at least £10 each on greyhound racing in a single day, all at minimum odds of 1.75. Hit that target and you earn a £10 Greyhound Racing Free Bet.
The offer runs Monday to Thursday until 31 December 2026, so you get four chances a week to qualify. If you already follow the dogs midweek, it's an easy way to pick up regular extra value.
Payment Methods for Claiming Bonuses
To claim the kwiff sign up offer bonus, you need to make a deposit first. That deposit funds your £10 qualifying bet, so it's the step that unlocks your Bet £10 Get £40 free bets. The good news is that the payment side is just as simple as the offer itself.
kwiff accepts Visa and Mastercard debit cards for deposits. The minimum deposit is £10, which matches the qualifying stake exactly. You don't need to put in more than that to get the full £40 in free bets. When you cash out, the minimum withdrawal is also £10.
If you're going for the casino welcome bonus, there's one extra limit. The maximum you can withdraw from your 200 free spins winnings is £250. E-wallets and virtual cards are excluded from that offer, so a standard Visa or Mastercard card is the way to go.
On fees, check the terms shown in the kwiff cashier and confirm with your card provider whether they add any charges of their own. Some banks treat gambling transactions differently, so it's worth a quick look before you deposit.
| Method | Min deposit | Min withdrawal | Good to know |
|---|---|---|---|
| Visa | £10 | £10 | Works for the sports offer and the casino bonus |
| Mastercard | £10 | £10 | Works for the sports offer and the casino bonus |
Casino free spins winnings are capped at a £250 maximum withdrawal.
How to Make Your First Deposit
Your first deposit only takes a minute. Have your card ready and follow these steps:
- Log in to your kwiff account.
- Click the "Deposit" button. You'll usually find it in the top menu or your account section.
- Select Visa or Mastercard.
- Enter the amount. The minimum is £10, which is all you need for the welcome offer.
- Follow the prompts to enter your card details.
- Confirm the transaction.
Once your balance updates, you're ready to place your £10 qualifying bet at odds of 1/1 (2.00) or bigger. No promo code is needed at the deposit stage either.
How to Withdraw Bonus Winnings
Free bets themselves can't be cashed out, but what you win with them can. Free bet winnings from the sports offer are paid as cash, minus the free bet stake. You can withdraw them once the free bet has been used and settled. For casino free spins, the most you can withdraw from those winnings is £250.
Here's how to get your money out:
- Make sure your account is verified by clicking the email verification link sent to your inbox.
- Log in to your kwiff account.
- Go to "My Account" or "Withdraw".
- Choose your withdrawal method. This is typically the same card you deposited with.
- Enter the amount. The minimum withdrawal is £10.
- Confirm your request.
Processing times can vary depending on your bank. Check the withdrawal page for the current timeframe, and keep an eye on your account for any updates.
